Civil Engineering Reference
In-Depth Information
Right sill:
Sum moments about grid line 4D:
1
5
F
4
=
[
1605 55
. ()
−
1739 6
()]
=
481 3
.
lb compress
ion
C
Sum horizontal forces:
V
bot
=
1605 5
.
+
481 3
.
=
2086 8
.
lb acting to theleft
V
b
2086 8
6
.
v
=
bot
=
=
347 8
.
plf
sill
45
Center pier:
Sum moments about grid line 3D:
∑
OK
M
=
1538 58
.()
−
481 35
. ()
−
980 83
.()
−
1739 40
( )
=
∴
Sum moments about grid line 3C:
1
3
F
3
=
[
1538 55
. ()
−
481 32
.()
−
1739 4
( )]
=
75 4
.
lb acti
ng to theleft
D
Sum horizontal forces:
∑
H
=
1538 5754 980 8
.
−
.
−
.
−
481 30
.
=
lb
∴
OK
V
b
1538 5
4
.
upper
v
=
=
=
384 6
.
plf
upper
34
VF
b
−
1538 5
.
−
481 3
.
upper
4
C
v
=
=
=
264 3
.
plf
middle
4
34
−
VF
−−
F
1538 5
.
−
481 3
.
−
980 8
.
upper
4
C
3
C
v
=
=
=
1
99.plf
lower
b
4
34
−
Check transfer diaphragm (see Fig. 10.21):
Note that in lieu of installing a strap full width
of the right pier, a partial-length strap and transfer diaphragm will be used.
V
h
1739
8
Rightpierunitshear
=
6
=
=+
217 38
.
plf
wall
Transfer diaphragm shears:
1605 55
8
.()
V
A
=
=
1003 4
.
lb
V
D
1003 4
3
.
v
=
A
TD
=
=+
334 5
.
plfpositiveshear
A
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